Transphobia in lesbian spaces is there I’m afraid, I feel like it is somewhat there, even if in a ““non-malignant”” kind of way, in any space with cis people just by virtue of societal values and a long list of etceteras. Best advice I can give, if possible find a space that is explicitly trans-inclusive, not just LGBTQ, but Trans in particular, you’ll have more of a chance of lesbians there being more open and experienced being around trans people, not a silver bullet by any means, but it’ll be a bit better.
So yeah, trust me can relate, we are all together climbing this mountain, just make sure you stop from time to time to rest at some safe spaces, we’ll provide some needed break and some virtual hugs and support, best of luck to you in the climb sister!